Fixing device of cylinder-locks



Patented June 15, 1920.

V. J. M. ERAS AND H. J. J. M. LIPS.

FIXING DEVICE 0F CYLINDER LOCKS.

APPLICATION FILED NOV. 9. 2913 1,343,712.

UNITED STATES PATENT OFFICE.

VINCENT JOSEPH MARIE ERAS AND HENRICUS JOHAIlNlTS J'OSEPHUS MARIA LIPS,OF DORDBECHT, NETHERLANDS.

FIXING- DEVICE OF CYLINDER-LOCKS.

Specification of Letters Patent. Patented J une 15, 1920.

application flled.November 9, 1918. Serial No. 261,917.

To all whom it may concern: Be it known that we, VINCENT JOSEPH Mama Emsand HnNRIoUs JDHANNUS JosnrHUs Mania LIPS, of Dordrecht, Netherlands,have invented new and useful Imrovements in F ixin Devices ofCylinderocks, of which the following is a specification.

The present invention relates to an improvement in the attachingarrangement of cylinder looks, more particularly in socalled rim locks.

With said locks the lock cylinder has its escutcheon edge spaced fromthe surface and resting against a washer interposed between the door andsaid escutcheon edge, the lock cylinder being fastened b T the aid ofscrews screwed into the lock cy inder on the inner side of the door, theheads of said screws bearing against aclamp plate on the inner side ofthe door.

It has been found that it is possible with lock cylinders fixed in theabove described manner, to et with a jemmy or the like under the e go ofthe cylinder escutcheon arranged beyond the door at the lock cylinderand in this way and while leanin against the door to lift the cylinderout 0 the door without much trouble. It is customary with the existingcylinder locks to arrange a pressed metal hollowi ring of about 1 mm.thickness between the edge of the lock cylinder and the door face, whichhole which housing rests at one end with an outwardly extending edgeagainst the front surface of the door and closes at the opposite endwith an inwardly extending edge around an edge'formed on the lockcylinder. Furthermore, the outer diameter of the portion of the housingadjacent to the outwardly extendingedge, is greater than the portion atthe opposite end, so as .cal formation to the housing.

to form a cone, whereas the housing is so proportioned that the frontalface of the lock cylinder lies behind the frontal face of the outwardlyextending housing edge.

With this construction the lock cylinder does not bear with an edgeagainst a washer interposed between this edge and the door, so that thelock cylinder is inaccessible for a emmy and inasmuch as the cylinderdoes not project beyond the door it cannot be caught by the tongs.Should a jemmy be put under the edge of the housin we latter willimmediately bend out. f e jemmy is put into the wood to try to get atthe cylinder nearer the back portion, no support will be found, as thejemmy will Sl1(l8 down the conical surface of the housmg.

The present invention can be applied to all existing rim looks. Thehousing may comprise a single bush, of greater diameter at its frontportion than its 'rear portion,

toform a cone, or the housing may comprlse a bush of uniform diameterand a metal ring arranged on the front ortion thereof, the outerperiphery of said ring being so shaped as to give the desired coni Thelatter construction facilitates the pressing out of the bushes andparticularly when being applied to existing locks, is of greatimportance, as in that ,case it would be necessary to make the foremostpart of thefbush thicker than the back part, as the shape of thecylinder has not a corresponding conical portion.

A further characteristic of the present invention lies in the fact thatthat portion of the housing lying against the outer door face is benttoward the door and is formed with an acute edge, so that on tighteningthe screws of the cylinder, this edge is pushed into the wood of thedoor. Owin to said projecting edge small deviations, i any, in the formor the width of the hole are moreover made invisible.

Furthermore according to the present invention the inwardly bent housingedge may be bent with a large radius, so that, should it 'be possible toget at said edge with a jemmy or some other burglar tool, the latterwill necessarily slide down the bent edge.

The invention is illustrated in the'accompanying drawings in which-Figure 1 is a horizontal section of a part of. a door with the lockcylinder in top plan view and the fixing device in section.

Fig. 2 is a rear view of the lock cylinder with the housing, comprisinga single bush, fitting thereupon,

Fi 3 is a section as in Fig. 1, the invention icing applied to thefixing of a lock cylinder of the usual form,

Fig. *1 is a section on the line A-B of Fig. 8, but with the peripheryof the lock cylinder shown in dotted lines.

The lock cylinder 1 is, as with the known construction, screwed intoposition with the aid of two screws 2, disposed at the rear face of thedoor. The screws are supported near their heads by a clamp plate 3located against the rear door face.

The edges of the clamp plate are preferably bent and sharpened, so thaton securing the cylinder in the door said edges are driven into thewood, the clamp plate being also strengthened by a rib 5. Furthermorethe screw heads 2 are conical at the side adjacent the clamp plate -l-.Owing to this, no bending stress will occur in the screws. should sameassume a somewhat aslant posi tion on account of inaccuracies in theposition of the clamp plate or owing to the holes in the clamp plate notbeing bored accurately, thus securing the screws against cracking onbeing secured. as often occurs. In

' this way the lock is very firmly secured. pre

venting not only the clamp plate from being thrown through the doorhole, but also preventing the lock cylinder from being turned. In thisconnection it may be remarked that this turning might also be preventedby pro viding the back portion of the housing at its outer peripherywith projections, which will be forced into the wood on the lockcylinder being fixed. These projections are shown in Fig. l at 6.

The lock cylinder 1 does not rest, as is now usual, with a flange oredge against a washer located on the front face of the door, but thecylinder on tightening the screws 2is locked up in a housing comprising,in this example, a bush 7 fitting in'the door hole and around the lockcylinder.. This bush is'provided on the outer side of the door with anoutwardly bent edge 8, lying against the front face of the door, whileonthe opposite end of the bush an inwardly bent edge 9 is formedthereon, and the lock cylinder has at that oint an edge engaging withthe ed e 9. urthermore the foremost v portion 0 the lock cylinder isthicker than the remaininw.

portion, said portions running into eac otherso as to form a cone. As aresult the bush 7 accurately fitting thereon is also conical on thecorresponding portion, so that on putting a. jemmy or the like betweenthe wood of the door and the bush no support will be obtained, as saidtool will slide down the conical portion.

()n tightening the screws 2 the edge formed on the lock cylinder willcontact with the edge S). while the conical faces of cylinder and bushwill likewise contact, thus locking the lock cylinder 1 in the hush Iconstituting the housing.

Furthermore the housing is so formed that the front face of the lockcylinder is situated behind the front face of the edge 8 formed on thehousing, practically in one plane with thedoor face. thus rendering itimpossible to catch the c 'linder with tongs.

The edge 8 of the bus 7 is bent toward the door and sharpened off. sothat this edge is pressed into the wood of the door on tightening thecylinder screws.

The shape of the edge 9 is clearly shown in Fig. 2 and corresponds withthe periphery of the shoulder in which the locking pins are located,with the ears for the screws 2 and the cylindrical portion in which thelock cylinder is arranged. This shape also prevents the bush T frombeing turned in respect to the lock cylinder.

Fig. 3 shows the manner in which the in' vention may be applied to lockcylinders. of the type now generally used for rim locks.

The fixing of the lock cylinder is effected in the same way as with theusual arrange ment described above. namely by means of the screws 2 andclamp plate 3. The lock cylinder is formed on the front side with aflange or edge 10, which with the fixing arrangement of the known typerests against a washer interposed between said flange and. the doorface.

In this example the housing comprises a bush 7 of uniform diameterthroughout. with the exception that at its front end it is made oflarger diameter to form a step against which the rear face of the flange10 bears, in combination with a separate metal ring 1-1 arranged on thebush 1 behind the edge 8 of the latter. This ring is pressed on the bush7 and is of such a shape that the outer periphery gives thedesiredconical formation. This construction facilitates the. manufactureof the housing in that the wall of the. bush 7 is of uniform thickness.On the lock side the bush 7 is provided with an inwardly bent edge 9.the shape of which )racticall corresponds with that shown in ig. 2. 5,however, at that point the lock cylinder 1 has no edge. but a sectionformed by the cylinder shaped portion 11, in which the key cylinder islocated and a shoulder 12 situated thereabove, in which the locking pinsare arranged, small metal stufiing pieces 13 are arranged on either ideof said shoulder 12, in order to obtain a cylindrical edge while theinwardly bent edge 9 of the bush 7 engages with the rear side of saidmetal pieces and the latter rest against the rear face of the frontflange 10 of the lock cylinder. The parts 13 also prevent the bush 7from being knocked in by tongs, which would facilitate the catching ofthe cylinder. The sectional shape of the lock cylinder and the parts 13lying thereon, are s iown in Fig. 4.

The Wall thickness at the front end of the housing might be madesomewhat thicker and afterward the outer periphery be finished until aconical form is obtained, or the housing might directly be pressed intothe conical form, but as it is preferable for the manufacturing to keepthe wall thickness uniform as above described.

Having thus fully described our invention, what we claim is 1. Incombination, a lock cylinder, a housing fitting around the same, thediam eter of the front portion of the housing being greater than that ofthe rear portion, to form a cone, an outwardly-bent edge at the frontface of said housing, adapted to be pressed into the wood of a door onthe housing being secured in place thereon, an inwardly extendingflanged portion at the opposite end of the housing, means carried by thelock cylinder, for engaging said flanged portion, and means for securingthe lock cylinder and housing to a door.

2. In combination, a lock cylinder, a housing fitting around the same,the diameter of the front portion of the housing being greater than thatof the rear portion, to form a cone, an outwardly-bent edge at the frontface of said housing adapted to be pressed into the wood of a door onthe housing being secured in place thereon, an inwardly extendingflanged portion at the opposite end of the housing, means carried by thelock cylinder, for engaging said flanged portion, and means forsimultaneously securing the lock cylinder and housing toadoor.

3. In combination, a door having an opening therein, a lock cylinderwithin the opening, a conical housing surrounding the lock cylinder, thebase of the cone being toward the front of the door, an outwardlyprojecting turned-back sharpened edge at the front thereof, an inwardlybent edge at the other end of the housing, cooperating engaging meanscarried by the lock cylinder, and means'for securing the housing to thedoor and the lock cylinder Within the housing.

4. In combination, a flanged lock cylinder, a bush fitting around saidcylinder, an outwardly-bent edge at the front thereof adapted to bedinto the Wood of a door, a stepon the inner side of the bush, aninwardly bent edge portion at the opposite end of the bush, stuflingpieces carried by the lock cylinder contacting with said inopening beinggreater than that of the interior portion, to form a cone, a housingadapted to fit the opening, outwardly-projecting sharpened edge portionson the exterior and interior of the housing adapted to bed into theWoodof the door when the lock is secured in position. a lockcylinderfitting within the housing, inwardly-extending flanged portions at theinner end of the housing, cooperating projections on the lock cylinder,and means for simultaneously securing the latter and the housing to thedoor.

(3. In combination, a lock cylinder, a housing fitting around the samethe diameter of the front portion of the housing being greater than thatof the rear portion, to form a cone, an outwardly-bent edge at frontface of said housing, adapted to be pressed into the wood of a door onthe housing being secured in place thereon, an inwardly extendingflanged portion at the opposite end of the housing, means carried by thelock cylinder, for engaging said flanged portion, and means forsimultaneously securing the lock cylinder and housing to a door,comprising a clamp plate located adjacent the rear face of the doorhaving screw-holes tapped therethrough, and screws engaging said clampplate and the lock cylinder.

7. In combination, a lock cylinder, a housing fitting around the same,the diameter of the front portion of the housing being greater than thatof the rear portion, to form a cone, an outwardly-bent edge at frontface of said housing, adapted to be pressed into the wood of a door onthe housing being secured in place thereon, an inwardly extendingflanged portion at the opposite end of the housing, means carried by'thr lock cylinder, for engaging said flanged portion, and means forsimultaneouslysecuring the lock cylinder and housing to a door,comprising a clamp plate, located adjacent the rear face of the door andhaving screw-holes tapped therethrough sharpened projections on saidclamp plate, a strengtlr ening rib, and conically-headed screws forengaging said clamp plate and the lock cylinder.

8. In combination, a lock cylinder, a housing fitting around the same,the 'ameter of the front portion of the housing being greater than thatof the rear portion, to form a cone, the frontal face of the lockcylinder being behind the frontal face of the housing, an outwardly-bentedge at front face of said housin adapted to be pressed into the wood ofa door on the housmg being secured in place thereon, an 1nwardlyextending flanged portion at the opposite end of the housing, meanscarried by the lock cylinder, for engaging said flanged portion, andmeans for securing the lock cylinder and housing to a door.

9. In combination, a flanged lock 0 linder, a conical housing,comprising a hush and a conical ring thereon, fitting around saidcylinder, an outwardly-bent edge at the front of the bush adapted to bedinto the wood of a door, a step on the inside of the bush, an inwaidlbent edge portion at the opposite end of tlie bush, stufling piecescarried by the e linder adapted to contact with said inwar ly bent edgeand the rear face of the flange on the lock cylinder, and means forsecuring the latter and its housing in position on a door.

n testimony whereof we affix our signatures in presence of twowitnesses.

VINCENT JOSEPH MARIE ERAS. HENRIGUS JOHANNUS JOSEPHUS MARIA LIPS.

Witnesses L. U. GEEN, W. P. YORRITLINA.

